CN111188589B

CN111188589B - Ram blowout preventer for well control device

Info

Publication number: CN111188589B
Application number: CN202010013391.6A
Authority: CN
Inventors: 周敏杰; 张春波; 姜兴安; 赵万生; 赵明; 王成; 刘洋
Original assignee: Puyang Luntong Mechanical Equipment Repair Co ltd
Current assignee: Puyang Luntong mechanical equipment repair Co.,Ltd.
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2022-01-14
Anticipated expiration: 2040-01-07
Also published as: CN111188589A

Abstract

The invention relates to the technical field of oilfield equipment, and discloses a ram blowout preventer for a well control device. This flashboard preventer for well control device, through setting up the second pneumatic cylinder, the sliding seat, the cooperation of slant joint board and joint circle can be guaranteed when sealed flashboard seals, carry out the auto-lock to sealed flashboard, and then release first pneumatic cylinder, increase the life of first pneumatic cylinder, when needing the unblock simultaneously, the second pneumatic cylinder moves and can realize, through the intercommunicating pore, rubber spring, the pressure of oil well can be utilized in the cooperation of side support board and intermediate junction hose, toward the inside punching press that carries out of rubber spring, and then take place deformation, and then make the tight laminating of sealed flashboard, reinforcing auto-lock effect.

Description

Ram blowout preventer for well control device

Technical Field

The invention relates to the technical field of oilfield equipment, in particular to a ram blowout preventer for a well control device.

Background

The blowout preventer is used for closing a wellhead in the operation processes of oil testing, well workover, well completion and the like to prevent blowout accidents, integrates the full sealing function and the half sealing function into a whole, has the characteristics of simple structure, easy operation, high pressure resistance and the like, and is a well mouth safety sealing device for preventing blowout commonly used in oil fields.

The in-process that the ram-type preventer was using, the effect through the pneumatic cylinder drives the ram effect for middle part intercommunication chamber seals, however when the pneumatic cylinder seals two rams, needs to lock the operation between the ram, just so need the pneumatic cylinder to supply the pressure for a long time, and then guarantees the locking effect, leads to the pneumatic cylinder to keep operating condition always easily like this, makes the life-span of pneumatic cylinder shorten, perhaps damages appearing in the in-process of using, leads to appearing the blowout.

When carrying out two sealed flashboards contact sealedly, generally be with the rubber packing pad of sealed flashboard side contact, and the pressure between two rubber packing pads must be enough big, and then guarantees sealed effect, nevertheless leads to rubber packing pad to appear warping like this easily, and then leads to the later stage to seal the effect variation.

Disclosure of Invention

The invention provides a ram blowout preventer for a well control device, which has the advantages of self-locking, further shortening the working time of a hydraulic cylinder, enhancing the self-locking effect by utilizing the self pressure of an oil well and enhancing the sealing effect by utilizing the self pressure of the oil well, and solves the problems in the background technology.

The invention provides the following technical scheme: the utility model provides a flashboard preventer for well control device, includes the device casing, middle part intercommunication chamber has been seted up to the inside of device casing, the side seal chamber has been seted up to the side of device casing, the side fixed mounting that the outside of device casing is located the side seal chamber has the linkage chamber, the side fixed mounting of linkage chamber has the connecting seat, the other end fixed mounting of connecting seat has first pneumatic cylinder, the output of first pneumatic cylinder extends to the inside and the fixedly connected with connecting rod of linkage chamber, the other end through connection chamber of connecting rod extends to the inside and the fixedly connected with side supporting seat in side seal chamber, the other end fixed mounting of side supporting seat has sealed flashboard.

Preferably, the lateral surface fixed mounting who connects the room has the support frame, the top fixed mounting of support frame has the second pneumatic cylinder, the output of second pneumatic cylinder extends to the side and the fixedly connected with sliding seat of support frame, the bottom fixed mounting of sliding seat has the joint seat, the surface of joint seat and the lateral wall activity joint of being connected the room, the inside movable mounting of joint seat has slant joint board, the outer fixed cover of connecting rod is equipped with the joint circle with slant joint board complex.

Preferably, the inside of device casing is located the below in side seal chamber and has seted up the intercommunicating pore, the one end and the side in middle part intercommunication chamber of intercommunicating pore are linked together, the other end of intercommunicating pore extends to the inside in side seal chamber, the side in side seal chamber is fixed to be bonded has the sealing washer with connecting rod matched with, the inside of side seal chamber is located the left side fixed mounting of sealing washer and has the side backup pad, the side fixedly connected with rubber spring of side backup pad, the other end of intercommunicating pore passes through the fixed intercommunication in side of rubber connecting pipe and rubber spring, the other end of rubber spring and one side fixed connection of sealed flashboard.

Preferably, the number of the rubber springs is two, and the two rubber springs are communicated through an intermediate connecting hose.

Preferably, a rubber sealing plate is fixedly bonded to a side surface of the sealing gate plate, a first oblique rubber tooth is fixedly connected to an inner side surface of the rubber sealing plate, and a second oblique rubber tooth matched with the first oblique rubber tooth is fixedly connected to a side surface of the other rubber sealing plate.

The invention has the following beneficial effects:

1. this flashboard preventer for well control device, through setting up the second pneumatic cylinder, the sliding seat, the cooperation of slant joint board and joint circle can be guaranteed when sealed flashboard seals, carry out the auto-lock to sealed flashboard, and then release first pneumatic cylinder, increase the life of first pneumatic cylinder, when needing the unblock simultaneously, the second pneumatic cylinder moves and can realize, through the intercommunicating pore, rubber spring, the pressure of oil well can be utilized in the cooperation of side support board and intermediate junction hose, toward the inside punching press that carries out of rubber spring, and then take place deformation, and then make the tight laminating of sealed flashboard, reinforcing auto-lock effect.

2. This flashboard preventer for well control device, through set up first slant rubber tooth and second slant rubber tooth on two sealed flashboards, and then make first slant rubber tooth and second slant rubber tooth carry out the joint, utilize the pressure of oil well to make and suppress mutually between the two, and then make the sealed effect between two sealed flashboards better, and sealed effect no longer limits in the effect of pneumatic cylinder, and then prevent that the deformation from appearing in the sealing rubber pad, and then prevent that the sealed effect in later stage from becoming poor.

Drawings

FIG. 1 is a cross-sectional view of the structure of the present invention;

FIG. 2 is an enlarged view of the point A in FIG. 1;

FIG. 3 is an enlarged view of the point B in FIG. 1;

FIG. 4 is a schematic view of a structural seal gate of the present invention.

In the figure: 1. a device housing; 2. a communicating hole; 3. a connection chamber; 4. a second hydraulic cylinder; 5. a connecting rod; 6. a connecting seat; 7. a first hydraulic cylinder; 8. sealing the gate plate; 9. the middle part is communicated with the cavity; 10. a clamping ring; 11. a support frame; 12. a movable seat; 13. a clamping seat; 14. an oblique clamping and connecting plate; 15. a rubber spring; 16. a side supporting seat; 17. the middle is connected with a hose; 18. a side support plate; 19. a second oblique rubber tooth; 20. a rubber sealing plate; 21. a first oblique rubber tooth; 22. a side sealing cavity; 23. and (5) sealing rings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a ram blowout preventer for a well control device comprises a device housing 1, a middle communicating cavity 9 is formed in the device housing 1, a side sealing cavity 22 is formed in the side surface of the device housing 1, a connecting chamber 3 is fixedly installed on the side surface of the side sealing cavity 22 on the outer side of the device housing 1, a connecting seat 6 is fixedly installed on the side surface of the connecting chamber 3, a first hydraulic cylinder 7 is fixedly installed at the other end of the connecting seat 6, the output end of the first hydraulic cylinder 7 extends into the connecting chamber 3 and is fixedly connected with a connecting rod 5, the other end of the connecting rod 5 penetrates through the connecting chamber 3 and extends into the side sealing cavity 22 and is fixedly connected with a side supporting seat 16, a sealing ram 8 is fixedly installed at the other end of the side supporting seat 16, a rubber sealing plate 20 is fixedly bonded to the side surface of the sealing ram 8, a first inclined rubber tooth 21 is fixedly connected to the inner side surface of the rubber sealing plate 20, the side surface of the other rubber sealing plate 20 is fixedly connected with a second oblique rubber tooth 19 matched with the first oblique rubber tooth 21, the first oblique rubber tooth 21 and the second oblique rubber tooth 19 are arranged on the two sealing flashboards 8, so that the first oblique rubber tooth 21 and the second oblique rubber tooth 19 are clamped, the two sealing flashboards are mutually pressed by using the pressure of an oil well, the sealing effect between the two sealing flashboards 8 is better, the sealing effect is not limited to the action of a hydraulic cylinder any more, the deformation of a sealing rubber pad is prevented, the later sealing effect is prevented from being deteriorated, the communicating hole 2 is formed in the device shell 1 below the side sealing cavity 22, one end of the communicating hole 2 is communicated with the side surface of the middle communicating cavity 9, the other end of the communicating hole 2 extends into the side sealing cavity 22, a sealing ring 23 matched with the connecting rod 5 is fixedly bonded on the side surface of the side sealing cavity 22, a side supporting plate 18 is fixedly arranged at the left side of a sealing ring 23 in the side sealing cavity 22, two rubber springs 15 are fixedly connected to the side of the side supporting plate 18, the other end of a communication hole 2 is fixedly communicated with the side of the rubber spring 15 through a rubber connecting pipe, the other end of the rubber spring 15 is fixedly connected with one side of a sealing flashboard 8, the two rubber springs 15 are communicated with each other through an intermediate connecting hose 17, the two rubber springs 15 enable the side of the sealing flashboard 8 to be uniformly stressed, the pressure of an oil well can be utilized through the cooperation of the communication hole 2, the rubber spring 15, the side supporting plate 18 and the intermediate connecting hose 17 to punch towards the inside of the rubber spring 15, further deformation is generated, further the sealing flashboard 8 is tightly attached, the self-locking effect is enhanced, a supporting frame 11 is fixedly arranged on the outer side surface of the connecting chamber 3, the top of the supporting frame 11 is fixedly provided with a second hydraulic cylinder 4, the output end of the second hydraulic cylinder 4 extends to the side surface of the supporting frame 11 and is fixedly connected with a movable seat 12, the bottom of the movable seat 12 is fixedly provided with a clamping seat 13, the outer surface of the clamping seat 13 is movably clamped with the outer side wall of the connecting chamber 3, the inner part of the clamping seat 13 is movably provided with an oblique clamping plate 14, the outer surface of the connecting rod 5 is fixedly sleeved with a clamping ring 10 matched with the oblique clamping plate 14, the matching of the second hydraulic cylinder 4, the movable seat 12, the oblique clamping plate 14 and the clamping ring 10 can ensure that the sealing flashboard 8 is self-locked when the sealing flashboard 8 is sealed, the first hydraulic cylinder 7 is released, the service life of the first hydraulic cylinder 7 is prolonged, and when the unlocking is needed, the second hydraulic cylinder 4 can be operated, it should be explained that the well control device generally comprises a flange and a four-way well drilling, and then connected to the ram blowout preventer.

The working principle is that when the blowout preventer works, the first hydraulic cylinder 7 drives the two sealing flashboards 8 to move reversely through the connecting rod 5 and the side supporting seat 16, so that the middle communicating cavity 9 is sealed, the first hydraulic cylinder 7 stops working at the moment, the clamping ring 10 is clamped with the inclined clamping plate 14 to self-lock the sealing flashboards 8, the pressure of an oil well acts on the first inclined rubber teeth 21 at the moment, so that the acting pressure between the first inclined rubber teeth 21 and the second inclined rubber teeth 19 is increased, the sealing effect between the sealing flashboards 8 is enhanced, meanwhile, the pressure of the oil well enters one rubber spring 15 through the communicating hole 2, so that the rubber spring 15 deforms, the locking force between the sealing flashboards 8 is enhanced, meanwhile, the pressure of the oil well passes through the intermediate connecting hose 17, so that the other rubber spring 15 deforms simultaneously, and then act on sealed flashboard 8, when the preventer was opened to needs, second pneumatic cylinder 4 drove sliding seat 12 and up moved, and then made slant joint board 14 break away from with joint ring 10, and first pneumatic cylinder 7 moved this moment, and then made sealed flashboard 8 separate through connecting rod 5, and the pressure of intercommunicating pore 2 department reduces this moment, and then made the pressure in the rubber spring 15 reduce, realized the unblock.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A ram blowout preventer for a well control device, comprising a device housing (1), characterized in that: the device comprises a device shell (1), a middle communicating cavity (9) is formed in the device shell (1), a side sealing cavity (22) is formed in the side face of the device shell (1), a connecting chamber (3) is fixedly mounted on the side face, located in the side sealing cavity (22), of the outer side of the device shell (1), a connecting seat (6) is fixedly mounted on the side face of the connecting chamber (3), a first hydraulic cylinder (7) is fixedly mounted at the other end of the connecting seat (6), the output end of the first hydraulic cylinder (7) extends into the connecting chamber (3) and is fixedly connected with a connecting rod (5), the other end of the connecting rod (5) penetrates through the connecting chamber (3) and extends into the side sealing cavity (22) and is fixedly connected with a side supporting seat (16), and a sealing flashboard (8) is fixedly mounted at the other end of the side supporting seat (16);

the lateral surface fixed mounting who connects room (3) has support frame (11), the top fixed mounting of support frame (11) has second pneumatic cylinder (4), the output of second pneumatic cylinder (4) extends to the side and the fixedly connected with sliding seat (12) of support frame (11), the bottom fixed mounting of sliding seat (12) has joint seat (13), the surface of joint seat (13) and the lateral wall activity joint of being connected room (3), the inside movable mounting of joint seat (13) has slant joint board (14), the outer fixed surface cover of connecting rod (5) is equipped with and inclines joint board (14) matched with joint circle (10).

2. The ram blowout preventer of claim 1, wherein: the inside of device casing (1) is located the below in side seal chamber (22) and has seted up intercommunicating pore (2), the one end and the side in middle part intercommunication chamber (9) of intercommunicating pore (2) are linked together, the other end of intercommunicating pore (2) extends to the inside in side seal chamber (22), the side in side seal chamber (22) is fixed to bond has and connects with connecting rod (5) matched with sealing washer (23), the inside in side seal chamber (22) is located the left side fixed mounting of sealing washer (23) and has side backup pad (18), the side fixedly connected with rubber spring (15) of side backup pad (18), the other end of intercommunicating pore (2) passes through the fixed intercommunication in side of rubber connection pipe with rubber spring (15), the other end of rubber spring (15) and the one side fixed connection of sealed flashboard (8).

3. The ram blowout preventer of claim 2, wherein: the number of the rubber springs (15) is two, and the two rubber springs (15) are communicated through a middle connecting hose (17).

4. The ram blowout preventer of claim 1, wherein: the side face of the sealing flashboard (8) is fixedly bonded with a rubber sealing plate (20), the inner side face of the rubber sealing plate (20) is fixedly connected with a first inclined rubber tooth (21), and the other side face of the rubber sealing plate (20) is fixedly connected with a second inclined rubber tooth (19) matched with the first inclined rubber tooth (21).